Icom IC-756PRO Service Manual

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29
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32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
P62/AN2 P61/AN1 P60/AN0 P57/INT3 P56/PWM P55/CNTR1 P54/CNTR0 P53/SRDY2 P52/SCLK2 P51/SOUT2 P50/SIN2 P47/SRDY1 P46/SCLK1 P45/TXD P44/RXD P43/INT2
P42/INT1
CNV66
RESET
P41/INT0
P40/INT4
XIN
XOUT
VSS
P27/D87
P26/D86
P25/D85
P24/D84
P23/D83
P22/D82
P21/D81
P20/D80
P17/AD15 P16/AD14 P15/AD13 P14/AD12 P13/AD11 P12/AD10
P11/AD9 P10/AD8 P07/AD7 P06/AD6 P05/AD5 P04/AD4 P03/AD3 P02/AD2 P01/AD1 P00/AD0
P37/RD
P36/WR
P35/SYNC
P34
P33/RESETOUT
P32/ONW
P31/DA2
P30/DA1
VREF
AV88
P67/AN7
P66/AN6
P65/AN5
P64/AN4
P63/AN3
VCC
IC5
M38022M2-138FP
CI1 CI2 CI3 CO1 CO2 CO3
Q211
DTC114EU
Q212
DTC114EU
Q213
DTC114EU
Q214
DTC114EU
Q215
DTC114EU
Q216
DTC114EU
Q217
DTC114EU
Q218
DTC114EU
43
12
R218 330 R217 330
D217 1SS319
34
D215 1SS319
21
R215 330 R216 330 R214 330 R213 330
12
D213 1SS319
43 34
R212 330
D211 1SS319
21
R211 330
C218 1 C217 1 C216 1 C215 1 C214 1 C213 1 C212 1 C211 1
MF2
MP28GA
MF1
MP28GA
T14V
PW
PX
PY
PZ
T14V
AW
AX
AY
AZ
C54 0.0047
THRU
4M
7M
10M
14M
18M
24M
VHF
NVHF
X1
CR-569
C47 20p C48 20p
R107 100k
C51 0.001
C52 0.0047
R105 1k
R71 1k
TRC
R149 100k
R76 10k
R106 1k
C53 0.0047
Q24
DTA114EU
Q23
DTC114EU
L32
EXC-ELDR25C
AN2 AN1 AN0
R61 100k
R62 100k
R63 100k
R64 100k
J12
ISET
OI
G
IC13
TA7805F
C98 100
D13
MA114
C71 0.0047
C72 470
R65
1k
D11
RD5.1M
D12 RD5.6M C49 0.0047
R66 56k
R102
12k
R103 100k
5
2
3
4
R67
1k
IC10
TC4S69F
MCK
MDAT
FSTB
GND
IKEY
ISTA
GND
DRES
ANTS
REFV
FORV
GND
-8V
GND
5V
5V
GND
T8V
GND
14V
14V
14V
from
MAIN
unit
J741
L29
EXC-ELDR25C
L30
EXC-ELDR25C
L31
EXC-ELDR25C
R124 220
R123 220
R125 220
R122 220
R98 1k
J7
J13
GND
GND
L8S
L7S
L3S
L6S
L5S
L1S
L2S
L4S
from
FILTER
unit
J3
C220 0.0047
C97 0.0047 C96 0.0047 C95 0.0047 C94 0.0047 C93 0.0047 C92 0.0047 C91 0.0047
R126 10
R127 10
R128 10
R129 10
R130 10
R131 10
R132 10
R133 10
18
17
16
15
14
13
12
11
10
IC12
TD62783AF
O1
O2
O3
O4
O5
O6
O7
O8
GND
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
VS
1
2
3
4
5
6
7
8
9
C89 0.0047
C90 10
L34
100uH
9
10
11
12
13
14
15
161
2
3
4
5
6
7
8
STRB
DATA
CLK
Q1
Q2
Q3
Q4
VSS
VDD
OENA
Q5
Q6
Q7
Q8
Q'S
QS
IC11
BU4094BCF
C88 10
C87 0.0047
R148 47k
L33
100uH
AN3
L11 100uH
C45 0.1
8
7
6
5
1
2
3
4
A0
A1
A2
VSS
VCC
TEST
SCL
SDA
IC6
X24C04S8-2.7
C46
0.1
R59 10k R60 10k
L10 100uH
W3
REF
FOR
L13
100uH
AN3
AN2
C210 0.01 R40 100k
R39 100k
R56 100k
R57 100k C209 0.01
R55
10k
R38
10k
12
43
D10 DWA010
C44 470p C43 220p
R54
10k
+
-
3
2
8
1
4
IC4a
NJM4558M
R53
1.5M
R50
6.8k
R51
6.8k
R52
100k
C31 470p
C40 0.0047
C30 220p
R37
10k
+
-
R36 1.5M
R32
100k
R33
5.6k
R34
5.6k
5
6
7
IC4b
NJM4558M
R35
82k
R31
2.2k
C27
0.0047
R49
100k
C39
0.0047
R48
10k
R30 220
C26 0.0047
D7
HSM88AS
R29 2.2k
C25
220p
R27
47
Q
Q
CLR VCC
K
CK
J
GND PR
8 4
6
5
15 16
2
1
3
IC3a
TC74AC112F
R147 1k
Q
Q
CLR
J
PR
11
CK
K
13
10 14
9
712
IC3b
TC74AC112F
R26
47
C24
220p
D6
HSM88AS
R28
3.3k
C23 0.0047
C22 47
L5
10uH
-8V
L3
100uH
R146
47
8
9
10
IC2c
TC74ACT32F
R143 1k
R145 1k
R144
47
3
2
1
14
7
IC2a
TC74ACT32F
R141 1k
6
5
4
R142
47
R138 1k
11
13
12
IC2b
TC74ACT32F
IC2d
TC74ACT32F
R137
47
R136
10k
65
IC14c
TC74AC04F
R15
100
D4
DWA010
C16
0.0047
C13 33P C14 33P
C12
3P
R140
47
R139
10k
IC14e
TC74AC04F
11 10
R17
100
D5
HSM88ASR
C101 0.0047
C102 10
21
14
7
IC14a
TC74AC04F
43
IC14b
TC74AC04F
IC14d
TC74AC04F
891312
IC14f
TC74AC04F
C17
82p
C15 33p R16 33
L4 LR-364
R46
4.7k
R47
1k
C38 0.0047
Q5
2SK515
R45
10k
C36 0.001
R44 1M
R42 10k
C35 0.0047
R43 10k
C37 0.0047
D9
HSM88AS
C100 100p
L9 2.2mH
C34 82p C33 68p R41 82
L8 LR-364
D8
HSM88AS
C32
1p
TRC
THRU
C20 0.0047 C21 0.0047
C9 0.0047
C70 10
3
2
8
1
4
+
-
IC1a
NJM4558M
C8 0.0047
C69 10
-
+7
6
5
IC1b
NJM4558M
R8 220k
R7 220k
R100 68k
R101 68k
R5
220k
R6
220k
C6 0.001
C7 0.001
R3
10k
R4
10k
R1
15
R2
15
D1
HSM88AS
D2
HSM88AS
L1 LR-364
C5
75p
C4
2p
C2
68p
C1
2p
C3
20p
R9 1M
R10 820k
R13
1k
R14
1k
C10 0.0047
C11 0.0047
21
34
AN1
AN0
5V
L2
10uH
J14 REF
RL4
AE5343
RL1
FXE-12G
D17
1SS301
Q15
DTA114EU
Q14
DTC114EU
D16
1SS301
C58 0.0047
Q13
DTA114EU
Q12
DTC114EU
R58 2P-50-W1L301
L27
LA-246
C64
15p
C63 47p C65 82p
C105
75p
C66 33p
L28
LA-236
RL2
FXE-12G
D18
1SS301
Q17
DTA114EU
Q16
DTC114EU
C59 0.0047
C60 0.0047
THRU
C109
0.1
D22 MA77
R152
4.7k
R151 820
R150
390
R153 4.7k
Q25
2SC4213
R155 390
R154
2.2k
D20
1SS301
Q22
DTA114EU
Q21
DTC114EU
RL3
G5A-237P
C62 0.0047
L22 LR-364
R83 15
D15
HSM88AS
C55 0.001
R84
10k
R86
180k
R87 68k
C56 0.0047
-
+
R88 68k
C57 0.0047
2
3
1
4
8
IC9a
NJM2903M
R92
1k
R93 10k
L25
100uH
R90
220k
R89
2.2M
Q27
DTA114EU
Q26
DTC114EU
R99 10k
J6
ANT2
W2
J5
ANT1
W1
CHASSIS
J3
TUIN
P3
P4
TUOT
J4
J2
RFRX
P2
J3
TUIN
TUOT
to RF
unit
J101
J1
CTIN
P1
to
FILTER
unit
J2
J8
C73 0.0047 C74 0.0047 C75 0.0047 C76 0.0047 C77 0.0047 C78 0.0047 C79 0.0047 C80 0.0047 C81 0.0047 C82 0.0047 C83 0.0047 C84 0.0047 C85 0.0047 C86 0.0047
R114 1k
R113 1k
R112 1k
R111 1k
R110 1k
R109 1k
R108 1k
R115 1k
R116 1k
R117 1k
R118 1k
R119 1k
R120 1k
R121 1k 4M
7M
10M
14M
18M
24M
VHF
CO3
CO2
CO1
NVHF
CI3
CI2
CI1
GND
GND
3.5M
7M
10M
14M
18M
24M
VHF
GND
NC
14V
14V
CO3
CO2
CO1
NVHF
CI3
CI2
CI1
GND
GND
CHASSIS W11
GND
GND
3.5M
7M
10M
14M
18M
24M
VHF
GND
NC
14V
14V
CO3
CO2
CO1
NVHF
CI3
CI2
CI1
GND
GND
CTRL UNIT
D3
1SS319
C107 7P
C108 5P
5V
-8V
14V
R69 100
W4
C61 0.0047 C60 0.0047 C59 0.0047 C58 0.0047 C57 0.0047 C56 0.0047 C55 0.0047 C54 0.0047
1
2
3
4
5
6
7
8
9
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
VS
O1
O2
O3
O4
O5
O6
O7
O8
GND
C18 0.0047
R26 1k
C9 0.0047 C10 0.0047
R27 1k
C11 0.0047
R28 1k
C12 0.0047
R29 1k
C13 0.0047
302 1k
C14 0.0047
R31 1k
C15 0.0047
R32 1k
C16 0.0047
R25 1k
18
17
16
15
14
13
12
11
10
IC2
M54562P
C53 0.0047 C52 0.0047 C51 0.0047 C50 0.0047 C49 0.0047 C48 0.0047 C47 0.0047
5
4
C46 0.0047
6
7
8
3
2
O2
1
9
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
VS
O1
O3
O4
O5
O6
O7
O8
GND
C17 0.0047
R18 1k R19 1k
C1 0.0047 C2 0.0047 C3 0.0047
R20 1k C4 0.0047 R21 1k C5 0.0047 R22 1k C6 0.0047 R23 1k C7 0.0047 R24 1k C8 0.0047
11
12
13
14
15
16
17
18
R17 1k
10
IC1
M54562P
L2 EXC-ELDR25C
L1 EXC-ELDR25C
RL9
NY-12W-K
L12
LR-307
L11
LR-307
C33 0.0047 C32 0.0047
RL8
NY-12W-K
L10
LR-363
L9
LR-363
L8
LR-490
RL7
NY-12W-K
C31 0.0047 C30 0.0047
RL6
NY-12W-K
L7
LR-489
L6
LR-490
RL5
NY-12W-K
C29 0.0047 C28 0.0047
RL4
NY-12W-K
L5
LR-489
L4
LR-490
RL3
NY-12W-K
C27 0.0047
L3 LA-488
RL1
NY-12W-K
RL10
NY-12W-K
C40 100p
RL12
NY-12W-K
C38 150p
RL14
NY-12W-K
C36 82p
C41 100p
C34 39p
RL2
NY-12W-K
RL15
NY-12W-K
C37 100p
RL13
NY-12W-K
C39 150p
RL11
NY-12W-K
C43 100p
C35 39p
C42 100p
C25 0.0047 C24 0.0047 C23 0.0047
C44 150p
C45 150p
J2 J1
C25 0.0047
VHFT
24T
18T
14T
10T
7T
35T
CI1
CI2
CI3
VHCI
VHCO
CO1
CO2
CO3
TUNER BOARD
J5
21
34
-
+
7
6
5
IC9b
NJM2903M
J10
J11
P1
P2
C202
47p
C201
47p
C200
47p
C223 47p C222 47p C221 47p
CP1 CP2 CP3
CP6 CP7 CP8 CP9
CP5
CP4
C225 0.0047 C224 0.0047
CP10
CP11
C227 0.0047
CP13
CP12
L35
HF50ACC322513-B
L36
HF50ACC322513-B
CP14 CP15 CP16 CP17 CP18 CP19 CP20 CP21
C226
0.0047
J4
IC1
SC-1380
A15
A14
A13
A12
A11
A10
A9
A8
NC
NC
WE
RESET
NC
NC
RY/BY
NC
A17
A7
A6
A5
A4
A3
A2
A1
A16
BYTE
VSS
DQ15/A-1
DQ7
DQ14
DQ6
DQ13
DQ5
DQ12
DQ4
VCC
DQ11
DQ3
DQ10
DQ2
DQ9
DQ1
DQ8
DQ0
OE
VSS
CE
A0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24 25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48 22
23
24
25
26
27
28
1
2
3
4
5
6
7
21
20
19
18
17
16
15
14
13
12
11
10
9
8
OE
A11
A9
A8
A13
WE
VCC
A14
A12
A7
A6
A5
A4
A3
A10
CS
IO8
IO7
IO6
IO5
IO4
GND
IO3
IO2
IO1
A0
A1
A2
IC2
IDT71256SA25PZ
to MAIN
RESET
BYTE
unit
J3503
to MAIN
unit
J3504
J1
J2
C1 0.1
C4 0.1
A16
A15
A14
A13
A12
A11
A10f
A9
A18
A8
A7
A6
A5
A4
A3
A2
A17
A1
A11
A9
A8
A13
A14
A12
A7
A6
A5
A4
A3
A10s
A0
A1
A2
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
A18
A17
A16
A15
A14
A13
A12
A11
A10s
A10f
C2 0.001
C3 10
D15
D7
D14
D6
D13
D5
D12
D4
D11
D3
D10
D2
D9
D1
D8
D0
R2 100k R1 100k
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
D8
D9
D10
D11
D12
D13
D14
D15
MEMORY BOARD
14V
14V
REF
FOR
14V
TRC
14V
5V
5V
5V
14V
14V
THRU
FOR
5V
14V
REF
FOR
-8V 14V
5V
FOR REF
RD
HWR
RD
CS0
CS3
EP1
Selected 11V
0.03V
0.65V
4.6V
-0.2V
0.06V
-1.6V
TUNER ON 0V
OFF 4.9V
12.5V
-7.9V
3.5V
0.15V
4.7V
4.9V
7.7V
5.0V
8.6V
0.16uS
MEASUREMENT CONDITIONS
VOLTMETER :50kΩ/VDC
SUPPLY VOLTAGE:13.8V
MEASUREMENTCONDITIONS
VOLTMETER :50kΩ/VDC
OSCILLOSCOPE :20MHz 1MΩ 25pF
SUPPLY VOLTAGE:13.8V
DISPLAY :14.1MHz USB
TUNER :ON
10-3 TUNER, MEMORY BOARDS AND CTRL UNIT
10 - 3

Icom IC-756PRO Specifications

General

Brand	Icom
Model	IC-756PRO
Category	Transceiver
Language	English